摘要
针对萨中油田南一区东部高台子油层细分后存在“测调工作量大、层段内差异较大、酸敏严重、注入困难、采出井无法分层配产”的问题,开展了精细注采工艺技术试验。通过应用“逐级解封封隔器技术、长效调剖技术、偏心恒流配水堵塞器技术、表面活性剂增注技术、多井段注入井长效压裂技术和机采井分层配产技术” 6项注采技术,首次实现了高台子油层注采工艺集成规模化应用,形成了以细分为主体的多油层、大跨度、高含水精细注采工艺组合模式。现场应用精细注采工艺技术416口井,试验区块自然递减率减缓了9. 4个百分点,年含水率上升速度下降了0. 67个百分点,开发效果得到明显改善;区块累计增油量为7. 85×104t,工艺组合技术推广前景广阔。
In view of the subdivision of Gaotaizi reservoirs in the eastern part of the southern first block of Sazhong Oilfield,there are some problems such as big workload in testing and adjustment,large difference in section,serious acid sensitivity,difficult injection,and separate layer production distribution cannot be regulated in production wells.Fine injection-production technologies test has been carried out.Through the application of six technologies as packers releasing in stage,long-term profile control,eccentric plug for constant flow water distribution,surfactant injection,long-term fracturing in multi-interval injectors,and separate layer production distribution in pumping wells,the integrated injection-production technology has been realized in the Gaotaizi reservoir in a large scale for the first time.A combined model of fine injection-production with subdivision as main part was formed in multi-layer,long span and high water cut reservoir.The fine injection-production technology has been applied in 416 wells;the natural decline rate was reduced by 9.4 percent;the annual increment rate of water cut was dropped by 0.67 percent with the obvious development effect;and the cumulative oil increment up to 7.85×104t in the block.The combined technology has broad prospect in the future.
出处
《采油工程》
2017年第2期59-62,86-87,共5页
Oil Production Engineering
关键词
精细注采工艺技术
逐级解封封隔器技术
长效调剖技术
偏心恒流配水堵塞器技术
表面活性剂增注技术
多井段注入井长效压裂技术
机采井分层配产技术
fine injection and production technology
packers releasing in stage
long-term profile control
eccentric plug for constant flow water distribution
surfactant injection
long-term fracturing in multi-interval injectors
separate layer production distribution in pumping wells
